Misc,

Finely homogeneous computations in free Lie algebras

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(1997)

Abstract

Introduction Let A # fa 1 #a 2 #####a k gbe a set with k elements, and QhAi the associative (non-commutative) algebra on A. Defining a Lie bracket (#x# y##xy # yx)onthisQ-module turns it into a Lie algebra, and we will denote by L#A# its Lie subalgebra generated by A (i.e. L#A# is the free Lie algebra on A and QhAi its enveloping algebra). A will now be called an alphabet, whose elements are the letters,andA # is the free monoid (the set of all words) over A. We know that<F9.1

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